Banner Ad

What is Banner Ad?

A banner ad is a rectangular graphic advertisement placed within or around a webpage — in the header, sidebar, footer, or between content sections — linked to a merchant through the affiliate's tracking URL.

Banner Ad In Practice

Banner ads are the most visible but least effective affiliate placement format. Display advertising averages below 1% CTR across all formats in 2026, and banner ads specifically land at 0.1%–0.3% — because users have developed strong automatic filtering of rectangular graphic placements they associate with advertising, a phenomenon called banner blindness. Merchants supply banner creatives to affiliates through their network's creative library; standard sizes include 300x250 (medium rectangle), 728x90 (leaderboard), and 160x600 (wide skyscraper). The primary use case for banner ads in affiliate marketing is not direct conversion but brand familiarity reinforcement alongside editorial content — a reader who sees a recognisable banner after reading a recommendation may be marginally more likely to convert on the affiliate link in the text. As a standalone mechanism without editorial support, banner ads are demonstrably inferior to every other affiliate placement type by a significant margin.

Example of Banner Ad